Suppose you are trying to find the volume of a box based on the given measurements for the length, width, and height of the box, where the height was measured in two parts. length, =2.20 in

width, =3.91 in

height, ℎ=10.4 in+1 in

Calculate the height, ℎ,
of the box, first keeping all digits, then rounding to the proper number of significant figures.
unrounded ℎ=

in

rounded ℎ=

in

Calculate the volume (
) of the box using =××ℎ.
Round to the proper number of significant figures.
=

For a research project, a student decided to test the effect of the lead(ii) ion (pb2+) on the ability of salmon eggs to hatch. this ion was obtainable from the water‐soluble salt, lead(ii) nitrate, which the student decided to make by the following reaction. pbo(s) + 2 hno3(aq) → pb(no3)2(aq) + h2o losses of product for various reasons were expected, and a yield of 86.0% was expected. in order to have 5.00 g of product at this yield, how many grams of pbo should be reacted? (assume that sufficient nitric acid, hno3, would be used.)